Automatic gain control apparatus for digital variable-gain amplifier
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United States of America Patent
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May 26, 1992
Grant Date -
N/A
app pub date -
Mar 14, 1991
filing date -
Mar 23, 1990
priority date (Note) -
Expired
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Abstract
Automatic gain control apparatus comprises a digitally adjustable amplifier, two threshold detectors with adjustable hysteresis, a latch and a control stage with an up/down counter. The latch stores only the logic states of the two threshold detectors. The digital output of the up/down counter is changed in value at the frequency of a first or second clock signal. The output of the up/down counter controls the gain of the amplifier.
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